Expected one result (or null) to be returned by selectOne(), but found: 2
原因： 1）查詢一條數據，但返回數據有多條 ps：數據庫中有相同的數據，不一定完全相同，可能是要查詢的字段相同 2）想要查詢多條數據，但是被前臺限制 今天搭建ssm框架實現登錄註冊時，遇見的一個小問題
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- 1. Expected one result (or null) to be returned by selectOne(), but found: 2
- 2. MyBatis報錯：Expected one result (or null) to be returned by selectOne(), but found: 2
- 3. TooManyResultsException: Expected one result (or null) to be returned by selectOne(), but found: 2]
- 4. 解決 Expected one result (or null) to be returned by selectOne(), but found: 2
- 5. 解決:TooManyResultsException: Expected one result (or null) to be returned by selectOne(), but found:
- 6. BUG之Expected one result (or null) to be returned by selectOne(), but found: 4
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- 9. org.apache.ibatis.exceptions.TooManyResultsException: Expected one result (or null) to be returned
- 10. 關於Expected one result (or null) to be returned by selectOne(), but found: 3。。。。異常